Home / 1,390,490-1,918,876.20-754,586

Finding the Fourth Proportional to 1,390,490, 1,918,876.20 and 754,586

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Solution

The fourth proportional to 1,390,490, 1,918,876.20 and 754,586 is: 1,041,328.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,490 : 1,918,876.20 = 754,586 : x
  2. Step 2: Convert to fraction form
    1,390,490/1,918,876.20 = 754,586/x
  3. Step 3: Cross multiply
    1,390,490x = 1,918,876.20 × 754,586
  4. Step 4: Simplify right side
    1,390,490x = 1,447,957,116,253.20
  5. Step 5: Solve for x
    x = 1,447,957,116,253.20/1,390,490
  6. Step 6: Final answer
    x = 1,041,328.68

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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.