Home / 1,240,660,385.94-1,712,111,342.22-683,743,439.28

Finding the Fourth Proportional to 1,240,660,385.94, 1,712,111,342.22 and 683,743,439.28

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Solution

The fourth proportional to 1,240,660,385.94, 1,712,111,342.22 and 683,743,439.28 is: 943,565,951.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,660,385.94 : 1,712,111,342.22 = 683,743,439.28 : x
  2. Step 2: Convert to fraction form
    1,240,660,385.94/1,712,111,342.22 = 683,743,439.28/x
  3. Step 3: Cross multiply
    1,240,660,385.94x = 1,712,111,342.22 × 683,743,439.28
  4. Step 4: Simplify right side
    1,240,660,385.94x = 1,170,644,897,559,799,808
  5. Step 5: Solve for x
    x = 1,170,644,897,559,799,808/1,240,660,385.94
  6. Step 6: Final answer
    x = 943,565,951.51

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Double scale
Find fourth proportional to 1,240,660,386.94, 1,712,111,343.60 and 683,743,440.28
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.