Home / 864,003.60-1,296,005.40-390,704.40

Finding the Fourth Proportional to 864,003.60, 1,296,005.40 and 390,704.40

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Solution

The fourth proportional to 864,003.60, 1,296,005.40 and 390,704.40 is: 586,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,003.60 : 1,296,005.40 = 390,704.40 : x
  2. Step 2: Convert to fraction form
    864,003.60/1,296,005.40 = 390,704.40/x
  3. Step 3: Cross multiply
    864,003.60x = 1,296,005.40 × 390,704.40
  4. Step 4: Simplify right side
    864,003.60x = 506,355,012,203.76
  5. Step 5: Solve for x
    x = 506,355,012,203.76/864,003.60
  6. Step 6: Final answer
    x = 586,056.60

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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.