Home / 858,253,497.60-1,287,572,152.20-312,995,031.60

Finding the Fourth Proportional to 858,253,497.60, 1,287,572,152.20 and 312,995,031.60

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Solution

The fourth proportional to 858,253,497.60, 1,287,572,152.20 and 312,995,031.60 is: 469,562,533.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,253,497.60 : 1,287,572,152.20 = 312,995,031.60 : x
  2. Step 2: Convert to fraction form
    858,253,497.60/1,287,572,152.20 = 312,995,031.60/x
  3. Step 3: Cross multiply
    858,253,497.60x = 1,287,572,152.20 × 312,995,031.60
  4. Step 4: Simplify right side
    858,253,497.60x = 403,003,686,465,119,040
  5. Step 5: Solve for x
    x = 403,003,686,465,119,040/858,253,497.60
  6. Step 6: Final answer
    x = 469,562,533.21

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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.