Home / 730,505.04-1,007,802.18-485,608.21

Finding the Fourth Proportional to 730,505.04, 1,007,802.18 and 485,608.21

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Solution

The fourth proportional to 730,505.04, 1,007,802.18 and 485,608.21 is: 669,943.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,505.04 : 1,007,802.18 = 485,608.21 : x
  2. Step 2: Convert to fraction form
    730,505.04/1,007,802.18 = 485,608.21/x
  3. Step 3: Cross multiply
    730,505.04x = 1,007,802.18 × 485,608.21
  4. Step 4: Simplify right side
    730,505.04x = 489,397,012,663.90
  5. Step 5: Solve for x
    x = 489,397,012,663.90/730,505.04
  6. Step 6: Final answer
    x = 669,943.38

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Double scale
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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.