Home / 864,024.40-1,296,036.60-421,656.40

Finding the Fourth Proportional to 864,024.40, 1,296,036.60 and 421,656.40

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Solution

The fourth proportional to 864,024.40, 1,296,036.60 and 421,656.40 is: 632,484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,024.40 : 1,296,036.60 = 421,656.40 : x
  2. Step 2: Convert to fraction form
    864,024.40/1,296,036.60 = 421,656.40/x
  3. Step 3: Cross multiply
    864,024.40x = 1,296,036.60 × 421,656.40
  4. Step 4: Simplify right side
    864,024.40x = 546,482,127,024.24
  5. Step 5: Solve for x
    x = 546,482,127,024.24/864,024.40
  6. Step 6: Final answer
    x = 632,484.60

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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.