Home / 487,357.16-672,282.77-283,385.61

Finding the Fourth Proportional to 487,357.16, 672,282.77 and 283,385.61

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Solution

The fourth proportional to 487,357.16, 672,282.77 and 283,385.61 is: 390,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,357.16 : 672,282.77 = 283,385.61 : x
  2. Step 2: Convert to fraction form
    487,357.16/672,282.77 = 283,385.61/x
  3. Step 3: Cross multiply
    487,357.16x = 672,282.77 × 283,385.61
  4. Step 4: Simplify right side
    487,357.16x = 190,515,261,452.01
  5. Step 5: Solve for x
    x = 190,515,261,452.01/487,357.16
  6. Step 6: Final answer
    x = 390,915.08

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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.