Home / 7,128,000.70-10,692,001.05-4,291,315.90

Finding the Fourth Proportional to 7,128,000.70, 10,692,001.05 and 4,291,315.90

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Solution

The fourth proportional to 7,128,000.70, 10,692,001.05 and 4,291,315.90 is: 6,436,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,000.70 : 10,692,001.05 = 4,291,315.90 : x
  2. Step 2: Convert to fraction form
    7,128,000.70/10,692,001.05 = 4,291,315.90/x
  3. Step 3: Cross multiply
    7,128,000.70x = 10,692,001.05 × 4,291,315.90
  4. Step 4: Simplify right side
    7,128,000.70x = 45,882,754,108,681.70
  5. Step 5: Solve for x
    x = 45,882,754,108,681.70/7,128,000.70
  6. Step 6: Final answer
    x = 6,436,973.85

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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.