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Finding the Fourth Proportional to 1,098,465, 1,515,904.74 and 621,537

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Solution

The fourth proportional to 1,098,465, 1,515,904.74 and 621,537 is: 857,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,465 : 1,515,904.74 = 621,537 : x
  2. Step 2: Convert to fraction form
    1,098,465/1,515,904.74 = 621,537/x
  3. Step 3: Cross multiply
    1,098,465x = 1,515,904.74 × 621,537
  4. Step 4: Simplify right side
    1,098,465x = 942,190,884,385.38
  5. Step 5: Solve for x
    x = 942,190,884,385.38/1,098,465
  6. Step 6: Final answer
    x = 857,734.10

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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.