Home / 668,828,000.80-1,003,242,001.20-436,375,707.40

Finding the Fourth Proportional to 668,828,000.80, 1,003,242,001.20 and 436,375,707.40

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Solution

The fourth proportional to 668,828,000.80, 1,003,242,001.20 and 436,375,707.40 is: 654,563,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,828,000.80 : 1,003,242,001.20 = 436,375,707.40 : x
  2. Step 2: Convert to fraction form
    668,828,000.80/1,003,242,001.20 = 436,375,707.40/x
  3. Step 3: Cross multiply
    668,828,000.80x = 1,003,242,001.20 × 436,375,707.40
  4. Step 4: Simplify right side
    668,828,000.80x = 437,790,437,967,041,664
  5. Step 5: Solve for x
    x = 437,790,437,967,041,664/668,828,000.80
  6. Step 6: Final answer
    x = 654,563,561.10

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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.