Home / 495,681.47-684,038.75-280,862.48

Finding the Fourth Proportional to 495,681.47, 684,038.75 and 280,862.48

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Solution

The fourth proportional to 495,681.47, 684,038.75 and 280,862.48 is: 387,589.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,681.47 : 684,038.75 = 280,862.48 : x
  2. Step 2: Convert to fraction form
    495,681.47/684,038.75 = 280,862.48/x
  3. Step 3: Cross multiply
    495,681.47x = 684,038.75 × 280,862.48
  4. Step 4: Simplify right side
    495,681.47x = 192,120,820,046.88
  5. Step 5: Solve for x
    x = 192,120,820,046.88/495,681.47
  6. Step 6: Final answer
    x = 387,589.28

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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.