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Finding the Fourth Proportional to 623,740.04, 860,711.72 and 351,720.98

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Solution

The fourth proportional to 623,740.04, 860,711.72 and 351,720.98 is: 485,347.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,740.04 : 860,711.72 = 351,720.98 : x
  2. Step 2: Convert to fraction form
    623,740.04/860,711.72 = 351,720.98/x
  3. Step 3: Cross multiply
    623,740.04x = 860,711.72 × 351,720.98
  4. Step 4: Simplify right side
    623,740.04x = 302,730,369,655.89
  5. Step 5: Solve for x
    x = 302,730,369,655.89/623,740.04
  6. Step 6: Final answer
    x = 485,347.02

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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.