Home / 742,802.16-1,025,130.42-420,569.04

Finding the Fourth Proportional to 742,802.16, 1,025,130.42 and 420,569.04

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Solution

The fourth proportional to 742,802.16, 1,025,130.42 and 420,569.04 is: 580,421.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,802.16 : 1,025,130.42 = 420,569.04 : x
  2. Step 2: Convert to fraction form
    742,802.16/1,025,130.42 = 420,569.04/x
  3. Step 3: Cross multiply
    742,802.16x = 1,025,130.42 × 420,569.04
  4. Step 4: Simplify right side
    742,802.16x = 431,138,116,614.20
  5. Step 5: Solve for x
    x = 431,138,116,614.20/742,802.16
  6. Step 6: Final answer
    x = 580,421.19

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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.