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Finding the Fourth Proportional to 867,999.40, 1,301,999.10 and 369,298.60

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Solution

The fourth proportional to 867,999.40, 1,301,999.10 and 369,298.60 is: 553,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,999.40 : 1,301,999.10 = 369,298.60 : x
  2. Step 2: Convert to fraction form
    867,999.40/1,301,999.10 = 369,298.60/x
  3. Step 3: Cross multiply
    867,999.40x = 1,301,999.10 × 369,298.60
  4. Step 4: Simplify right side
    867,999.40x = 480,826,444,831.26
  5. Step 5: Solve for x
    x = 480,826,444,831.26/867,999.40
  6. Step 6: Final answer
    x = 553,947.90

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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.