Home / 739,172.60-1,020,059.67-399,640.85

Finding the Fourth Proportional to 739,172.60, 1,020,059.67 and 399,640.85

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Solution

The fourth proportional to 739,172.60, 1,020,059.67 and 399,640.85 is: 551,505.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,172.60 : 1,020,059.67 = 399,640.85 : x
  2. Step 2: Convert to fraction form
    739,172.60/1,020,059.67 = 399,640.85/x
  3. Step 3: Cross multiply
    739,172.60x = 1,020,059.67 × 399,640.85
  4. Step 4: Simplify right side
    739,172.60x = 407,657,513,569.52
  5. Step 5: Solve for x
    x = 407,657,513,569.52/739,172.60
  6. Step 6: Final answer
    x = 551,505.17

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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.