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Finding the Fourth Proportional to 827,221.40, 1,155,748 and 827,221.40

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Solution

The fourth proportional to 827,221.40, 1,155,748 and 827,221.40 is: 1,155,748

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,221.40 : 1,155,748 = 827,221.40 : x
  2. Step 2: Convert to fraction form
    827,221.40/1,155,748 = 827,221.40/x
  3. Step 3: Cross multiply
    827,221.40x = 1,155,748 × 827,221.40
  4. Step 4: Simplify right side
    827,221.40x = 956,059,478,607.20
  5. Step 5: Solve for x
    x = 956,059,478,607.20/827,221.40
  6. Step 6: Final answer
    x = 1,155,748

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.