Home / 742,688.16-1,024,934.04-420,391.40

Finding the Fourth Proportional to 742,688.16, 1,024,934.04 and 420,391.40

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Solution

The fourth proportional to 742,688.16, 1,024,934.04 and 420,391.40 is: 580,153.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,688.16 : 1,024,934.04 = 420,391.40 : x
  2. Step 2: Convert to fraction form
    742,688.16/1,024,934.04 = 420,391.40/x
  3. Step 3: Cross multiply
    742,688.16x = 1,024,934.04 × 420,391.40
  4. Step 4: Simplify right side
    742,688.16x = 430,873,455,983.26
  5. Step 5: Solve for x
    x = 430,873,455,983.26/742,688.16
  6. Step 6: Final answer
    x = 580,153.93

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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.