Home / 1,320,444.10-1,980,666.15-521,314.30

Finding the Fourth Proportional to 1,320,444.10, 1,980,666.15 and 521,314.30

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Solution

The fourth proportional to 1,320,444.10, 1,980,666.15 and 521,314.30 is: 781,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,444.10 : 1,980,666.15 = 521,314.30 : x
  2. Step 2: Convert to fraction form
    1,320,444.10/1,980,666.15 = 521,314.30/x
  3. Step 3: Cross multiply
    1,320,444.10x = 1,980,666.15 × 521,314.30
  4. Step 4: Simplify right side
    1,320,444.10x = 1,032,549,587,520.95
  5. Step 5: Solve for x
    x = 1,032,549,587,520.95/1,320,444.10
  6. Step 6: Final answer
    x = 781,971.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.