Home / 676,852.48-934,154.40-390,315.52

Finding the Fourth Proportional to 676,852.48, 934,154.40 and 390,315.52

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Solution

The fourth proportional to 676,852.48, 934,154.40 and 390,315.52 is: 538,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,852.48 : 934,154.40 = 390,315.52 : x
  2. Step 2: Convert to fraction form
    676,852.48/934,154.40 = 390,315.52/x
  3. Step 3: Cross multiply
    676,852.48x = 934,154.40 × 390,315.52
  4. Step 4: Simplify right side
    676,852.48x = 364,614,960,396.29
  5. Step 5: Solve for x
    x = 364,614,960,396.29/676,852.48
  6. Step 6: Final answer
    x = 538,691.92

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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.