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Finding the Fourth Proportional to 917,894, 1,266,338.76 and 676,748.72

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Solution

The fourth proportional to 917,894, 1,266,338.76 and 676,748.72 is: 933,651.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,894 : 1,266,338.76 = 676,748.72 : x
  2. Step 2: Convert to fraction form
    917,894/1,266,338.76 = 676,748.72/x
  3. Step 3: Cross multiply
    917,894x = 1,266,338.76 × 676,748.72
  4. Step 4: Simplify right side
    917,894x = 856,993,134,916.39
  5. Step 5: Solve for x
    x = 856,993,134,916.39/917,894
  6. Step 6: Final answer
    x = 933,651.53

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Double scale
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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.