Home / 716,428.38-988,677.59-389,748.51

Finding the Fourth Proportional to 716,428.38, 988,677.59 and 389,748.51

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Solution

The fourth proportional to 716,428.38, 988,677.59 and 389,748.51 is: 537,856.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,428.38 : 988,677.59 = 389,748.51 : x
  2. Step 2: Convert to fraction form
    716,428.38/988,677.59 = 389,748.51/x
  3. Step 3: Cross multiply
    716,428.38x = 988,677.59 × 389,748.51
  4. Step 4: Simplify right side
    716,428.38x = 385,335,615,624.15
  5. Step 5: Solve for x
    x = 385,335,615,624.15/716,428.38
  6. Step 6: Final answer
    x = 537,856.44

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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.