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Finding the Fourth Proportional to 623,524.86, 860,696.93 and 485,430.17

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Solution

The fourth proportional to 623,524.86, 860,696.93 and 485,430.17 is: 670,074.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,524.86 : 860,696.93 = 485,430.17 : x
  2. Step 2: Convert to fraction form
    623,524.86/860,696.93 = 485,430.17/x
  3. Step 3: Cross multiply
    623,524.86x = 860,696.93 × 485,430.17
  4. Step 4: Simplify right side
    623,524.86x = 417,808,250,545.29
  5. Step 5: Solve for x
    x = 417,808,250,545.29/623,524.86
  6. Step 6: Final answer
    x = 670,074.72

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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.