Home / 672,623,962.80-1,008,935,944.20-412,997,319.60

Finding the Fourth Proportional to 672,623,962.80, 1,008,935,944.20 and 412,997,319.60

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Solution

The fourth proportional to 672,623,962.80, 1,008,935,944.20 and 412,997,319.60 is: 619,495,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,623,962.80 : 1,008,935,944.20 = 412,997,319.60 : x
  2. Step 2: Convert to fraction form
    672,623,962.80/1,008,935,944.20 = 412,997,319.60/x
  3. Step 3: Cross multiply
    672,623,962.80x = 1,008,935,944.20 × 412,997,319.60
  4. Step 4: Simplify right side
    672,623,962.80x = 416,687,840,602,695,232
  5. Step 5: Solve for x
    x = 416,687,840,602,695,232/672,623,962.80
  6. Step 6: Final answer
    x = 619,495,979.40

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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.