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Finding the Fourth Proportional to 1,007,492, 1,390,338.96 and 554,781.92

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Solution

The fourth proportional to 1,007,492, 1,390,338.96 and 554,781.92 is: 765,599.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,492 : 1,390,338.96 = 554,781.92 : x
  2. Step 2: Convert to fraction form
    1,007,492/1,390,338.96 = 554,781.92/x
  3. Step 3: Cross multiply
    1,007,492x = 1,390,338.96 × 554,781.92
  4. Step 4: Simplify right side
    1,007,492x = 771,334,917,679.60
  5. Step 5: Solve for x
    x = 771,334,917,679.60/1,007,492
  6. Step 6: Final answer
    x = 765,599.05

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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.