Home / 991,440.49-1,487,165.86-451,319.04

Finding the Fourth Proportional to 991,440.49, 1,487,165.86 and 451,319.04

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Solution

The fourth proportional to 991,440.49, 1,487,165.86 and 451,319.04 is: 676,980.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,440.49 : 1,487,165.86 = 451,319.04 : x
  2. Step 2: Convert to fraction form
    991,440.49/1,487,165.86 = 451,319.04/x
  3. Step 3: Cross multiply
    991,440.49x = 1,487,165.86 × 451,319.04
  4. Step 4: Simplify right side
    991,440.49x = 671,186,260,820.15
  5. Step 5: Solve for x
    x = 671,186,260,820.15/991,440.49
  6. Step 6: Final answer
    x = 676,980.89

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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.