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Finding the Fourth Proportional to 485,347.65, 724,224.59 and 434,914.17

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Solution

The fourth proportional to 485,347.65, 724,224.59 and 434,914.17 is: 648,968.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,347.65 : 724,224.59 = 434,914.17 : x
  2. Step 2: Convert to fraction form
    485,347.65/724,224.59 = 434,914.17/x
  3. Step 3: Cross multiply
    485,347.65x = 724,224.59 × 434,914.17
  4. Step 4: Simplify right side
    485,347.65x = 314,975,534,278.87
  5. Step 5: Solve for x
    x = 314,975,534,278.87/485,347.65
  6. Step 6: Final answer
    x = 648,968.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.