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Finding the Fourth Proportional to 612,000.80, 918,001.20 and 607,853.60

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Solution

The fourth proportional to 612,000.80, 918,001.20 and 607,853.60 is: 911,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,000.80 : 918,001.20 = 607,853.60 : x
  2. Step 2: Convert to fraction form
    612,000.80/918,001.20 = 607,853.60/x
  3. Step 3: Cross multiply
    612,000.80x = 918,001.20 × 607,853.60
  4. Step 4: Simplify right side
    612,000.80x = 558,010,334,224.32
  5. Step 5: Solve for x
    x = 558,010,334,224.32/612,000.80
  6. Step 6: Final answer
    x = 911,780.40

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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.