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Finding the Fourth Proportional to 722,547.52, 997,115.64 and 400,278.52

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Solution

The fourth proportional to 722,547.52, 997,115.64 and 400,278.52 is: 552,384.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,547.52 : 997,115.64 = 400,278.52 : x
  2. Step 2: Convert to fraction form
    722,547.52/997,115.64 = 400,278.52/x
  3. Step 3: Cross multiply
    722,547.52x = 997,115.64 × 400,278.52
  4. Step 4: Simplify right side
    722,547.52x = 399,123,972,648.05
  5. Step 5: Solve for x
    x = 399,123,972,648.05/722,547.52
  6. Step 6: Final answer
    x = 552,384.39

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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.