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Finding the Fourth Proportional to 676,603.80, 1,012,281.30 and 440,407.80

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Solution

The fourth proportional to 676,603.80, 1,012,281.30 and 440,407.80 is: 658,903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,603.80 : 1,012,281.30 = 440,407.80 : x
  2. Step 2: Convert to fraction form
    676,603.80/1,012,281.30 = 440,407.80/x
  3. Step 3: Cross multiply
    676,603.80x = 1,012,281.30 × 440,407.80
  4. Step 4: Simplify right side
    676,603.80x = 445,816,580,314.14
  5. Step 5: Solve for x
    x = 445,816,580,314.14/676,603.80
  6. Step 6: Final answer
    x = 658,903.45

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1.5x scale

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.