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Finding the Fourth Proportional to 853,841.81, 1,178,328.80 and 466,648.74

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Solution

The fourth proportional to 853,841.81, 1,178,328.80 and 466,648.74 is: 643,990.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,841.81 : 1,178,328.80 = 466,648.74 : x
  2. Step 2: Convert to fraction form
    853,841.81/1,178,328.80 = 466,648.74/x
  3. Step 3: Cross multiply
    853,841.81x = 1,178,328.80 × 466,648.74
  4. Step 4: Simplify right side
    853,841.81x = 549,865,650,992.33
  5. Step 5: Solve for x
    x = 549,865,650,992.33/853,841.81
  6. Step 6: Final answer
    x = 643,990.07

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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.