Home / 642,114,803.40-963,172,205.10-438,041,459.40

Finding the Fourth Proportional to 642,114,803.40, 963,172,205.10 and 438,041,459.40

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Solution

The fourth proportional to 642,114,803.40, 963,172,205.10 and 438,041,459.40 is: 657,062,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,114,803.40 : 963,172,205.10 = 438,041,459.40 : x
  2. Step 2: Convert to fraction form
    642,114,803.40/963,172,205.10 = 438,041,459.40/x
  3. Step 3: Cross multiply
    642,114,803.40x = 963,172,205.10 × 438,041,459.40
  4. Step 4: Simplify right side
    642,114,803.40x = 421,909,358,375,520,128
  5. Step 5: Solve for x
    x = 421,909,358,375,520,128/642,114,803.40
  6. Step 6: Final answer
    x = 657,062,189.10

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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.