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Finding the Fourth Proportional to 1,390,498, 1,918,887.24 and 754,594

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Solution

The fourth proportional to 1,390,498, 1,918,887.24 and 754,594 is: 1,041,339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,498 : 1,918,887.24 = 754,594 : x
  2. Step 2: Convert to fraction form
    1,390,498/1,918,887.24 = 754,594/x
  3. Step 3: Cross multiply
    1,390,498x = 1,918,887.24 × 754,594
  4. Step 4: Simplify right side
    1,390,498x = 1,447,980,797,980.56
  5. Step 5: Solve for x
    x = 1,447,980,797,980.56/1,390,498
  6. Step 6: Final answer
    x = 1,041,339.72

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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.