Home / 1,398,638,282.48-1,930,126,994.59-772,111,858.76

Finding the Fourth Proportional to 1,398,638,282.48, 1,930,126,994.59 and 772,111,858.76

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Solution

The fourth proportional to 1,398,638,282.48, 1,930,126,994.59 and 772,111,858.76 is: 1,065,517,768.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,638,282.48 : 1,930,126,994.59 = 772,111,858.76 : x
  2. Step 2: Convert to fraction form
    1,398,638,282.48/1,930,126,994.59 = 772,111,858.76/x
  3. Step 3: Cross multiply
    1,398,638,282.48x = 1,930,126,994.59 × 772,111,858.76
  4. Step 4: Simplify right side
    1,398,638,282.48x = 1,490,273,941,435,737,344
  5. Step 5: Solve for x
    x = 1,490,273,941,435,737,344/1,398,638,282.48
  6. Step 6: Final answer
    x = 1,065,517,768.32

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Double scale
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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.