Home / 676,934.91-934,263.45-390,448.71

Finding the Fourth Proportional to 676,934.91, 934,263.45 and 390,448.71

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Solution

The fourth proportional to 676,934.91, 934,263.45 and 390,448.71 is: 538,873.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,934.91 : 934,263.45 = 390,448.71 : x
  2. Step 2: Convert to fraction form
    676,934.91/934,263.45 = 390,448.71/x
  3. Step 3: Cross multiply
    676,934.91x = 934,263.45 × 390,448.71
  4. Step 4: Simplify right side
    676,934.91x = 364,781,958,852.65
  5. Step 5: Solve for x
    x = 364,781,958,852.65/676,934.91
  6. Step 6: Final answer
    x = 538,873.02

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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.