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Finding the Fourth Proportional to 867,999.90, 1,301,999.85 and 369,299.10

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Solution

The fourth proportional to 867,999.90, 1,301,999.85 and 369,299.10 is: 553,948.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,999.90 : 1,301,999.85 = 369,299.10 : x
  2. Step 2: Convert to fraction form
    867,999.90/1,301,999.85 = 369,299.10/x
  3. Step 3: Cross multiply
    867,999.90x = 1,301,999.85 × 369,299.10
  4. Step 4: Simplify right side
    867,999.90x = 480,827,372,805.14
  5. Step 5: Solve for x
    x = 480,827,372,805.14/867,999.90
  6. Step 6: Final answer
    x = 553,948.65

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1.5x scale

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.