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Finding the Fourth Proportional to 911,875.80, 1,367,813.70 and 899,434.20

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Solution

The fourth proportional to 911,875.80, 1,367,813.70 and 899,434.20 is: 1,349,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,875.80 : 1,367,813.70 = 899,434.20 : x
  2. Step 2: Convert to fraction form
    911,875.80/1,367,813.70 = 899,434.20/x
  3. Step 3: Cross multiply
    911,875.80x = 1,367,813.70 × 899,434.20
  4. Step 4: Simplify right side
    911,875.80x = 1,230,258,421,008.54
  5. Step 5: Solve for x
    x = 1,230,258,421,008.54/911,875.80
  6. Step 6: Final answer
    x = 1,349,151.30

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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.