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Finding the Fourth Proportional to 875,908.70, 1,314,057.45 and 402,479.90

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Solution

The fourth proportional to 875,908.70, 1,314,057.45 and 402,479.90 is: 603,809.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,908.70 : 1,314,057.45 = 402,479.90 : x
  2. Step 2: Convert to fraction form
    875,908.70/1,314,057.45 = 402,479.90/x
  3. Step 3: Cross multiply
    875,908.70x = 1,314,057.45 × 402,479.90
  4. Step 4: Simplify right side
    875,908.70x = 528,881,711,070.26
  5. Step 5: Solve for x
    x = 528,881,711,070.26/875,908.70
  6. Step 6: Final answer
    x = 603,809.18

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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.