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Finding the Fourth Proportional to 891,648,985.20, 1,337,473,477.80 and 673,970,751.60

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Solution

The fourth proportional to 891,648,985.20, 1,337,473,477.80 and 673,970,751.60 is: 1,010,956,127.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,648,985.20 : 1,337,473,477.80 = 673,970,751.60 : x
  2. Step 2: Convert to fraction form
    891,648,985.20/1,337,473,477.80 = 673,970,751.60/x
  3. Step 3: Cross multiply
    891,648,985.20x = 1,337,473,477.80 × 673,970,751.60
  4. Step 4: Simplify right side
    891,648,985.20x = 901,418,005,077,931,904
  5. Step 5: Solve for x
    x = 901,418,005,077,931,904/891,648,985.20
  6. Step 6: Final answer
    x = 1,010,956,127.40

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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.