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Finding the Fourth Proportional to 545,316.86, 752,559.31 and 315,870.49

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Solution

The fourth proportional to 545,316.86, 752,559.31 and 315,870.49 is: 435,914.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,316.86 : 752,559.31 = 315,870.49 : x
  2. Step 2: Convert to fraction form
    545,316.86/752,559.31 = 315,870.49/x
  3. Step 3: Cross multiply
    545,316.86x = 752,559.31 × 315,870.49
  4. Step 4: Simplify right side
    545,316.86x = 237,711,273,329.38
  5. Step 5: Solve for x
    x = 237,711,273,329.38/545,316.86
  6. Step 6: Final answer
    x = 435,914.04

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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.