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Finding the Fourth Proportional to 978,276.30, 1,465,600.05 and 556,298.70

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Solution

The fourth proportional to 978,276.30, 1,465,600.05 and 556,298.70 is: 833,416.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,276.30 : 1,465,600.05 = 556,298.70 : x
  2. Step 2: Convert to fraction form
    978,276.30/1,465,600.05 = 556,298.70/x
  3. Step 3: Cross multiply
    978,276.30x = 1,465,600.05 × 556,298.70
  4. Step 4: Simplify right side
    978,276.30x = 815,311,402,534.94
  5. Step 5: Solve for x
    x = 815,311,402,534.94/978,276.30
  6. Step 6: Final answer
    x = 833,416.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.