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Finding the Fourth Proportional to 607,421.60, 838,403.94 and 349,326.76

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Solution

The fourth proportional to 607,421.60, 838,403.94 and 349,326.76 is: 482,164.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,421.60 : 838,403.94 = 349,326.76 : x
  2. Step 2: Convert to fraction form
    607,421.60/838,403.94 = 349,326.76/x
  3. Step 3: Cross multiply
    607,421.60x = 838,403.94 × 349,326.76
  4. Step 4: Simplify right side
    607,421.60x = 292,876,931,931.43
  5. Step 5: Solve for x
    x = 292,876,931,931.43/607,421.60
  6. Step 6: Final answer
    x = 482,164.17

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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.