Home / 917,390.40-1,376,085.60-858,341.40

Finding the Fourth Proportional to 917,390.40, 1,376,085.60 and 858,341.40

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Solution

The fourth proportional to 917,390.40, 1,376,085.60 and 858,341.40 is: 1,287,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,390.40 : 1,376,085.60 = 858,341.40 : x
  2. Step 2: Convert to fraction form
    917,390.40/1,376,085.60 = 858,341.40/x
  3. Step 3: Cross multiply
    917,390.40x = 1,376,085.60 × 858,341.40
  4. Step 4: Simplify right side
    917,390.40x = 1,181,151,240,423.84
  5. Step 5: Solve for x
    x = 1,181,151,240,423.84/917,390.40
  6. Step 6: Final answer
    x = 1,287,512.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.