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Finding the Fourth Proportional to 710,740.12, 980,726.82 and 456,435.88

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Solution

The fourth proportional to 710,740.12, 980,726.82 and 456,435.88 is: 629,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,740.12 : 980,726.82 = 456,435.88 : x
  2. Step 2: Convert to fraction form
    710,740.12/980,726.82 = 456,435.88/x
  3. Step 3: Cross multiply
    710,740.12x = 980,726.82 × 456,435.88
  4. Step 4: Simplify right side
    710,740.12x = 447,638,909,126.30
  5. Step 5: Solve for x
    x = 447,638,909,126.30/710,740.12
  6. Step 6: Final answer
    x = 629,820.80

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1.5x scale

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.