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Finding the Fourth Proportional to 443,592.10, 610,220.07 and 388,897.95

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Solution

The fourth proportional to 443,592.10, 610,220.07 and 388,897.95 is: 534,980.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,592.10 : 610,220.07 = 388,897.95 : x
  2. Step 2: Convert to fraction form
    443,592.10/610,220.07 = 388,897.95/x
  3. Step 3: Cross multiply
    443,592.10x = 610,220.07 × 388,897.95
  4. Step 4: Simplify right side
    443,592.10x = 237,313,334,271.86
  5. Step 5: Solve for x
    x = 237,313,334,271.86/443,592.10
  6. Step 6: Final answer
    x = 534,980.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.