Home / 657,946.20-987,308.10-480,005.40

Finding the Fourth Proportional to 657,946.20, 987,308.10 and 480,005.40

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Solution

The fourth proportional to 657,946.20, 987,308.10 and 480,005.40 is: 720,291.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,946.20 : 987,308.10 = 480,005.40 : x
  2. Step 2: Convert to fraction form
    657,946.20/987,308.10 = 480,005.40/x
  3. Step 3: Cross multiply
    657,946.20x = 987,308.10 × 480,005.40
  4. Step 4: Simplify right side
    657,946.20x = 473,913,219,463.74
  5. Step 5: Solve for x
    x = 473,913,219,463.74/657,946.20
  6. Step 6: Final answer
    x = 720,291.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.