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Finding the Fourth Proportional to 528,805.28, 730,035.76 and 407,681.12

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Solution

The fourth proportional to 528,805.28, 730,035.76 and 407,681.12 is: 562,819.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,805.28 : 730,035.76 = 407,681.12 : x
  2. Step 2: Convert to fraction form
    528,805.28/730,035.76 = 407,681.12/x
  3. Step 3: Cross multiply
    528,805.28x = 730,035.76 × 407,681.12
  4. Step 4: Simplify right side
    528,805.28x = 297,621,796,276.85
  5. Step 5: Solve for x
    x = 297,621,796,276.85/528,805.28
  6. Step 6: Final answer
    x = 562,819.26

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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.