Home / 688,009.20-1,032,013.80-520,047.60

Finding the Fourth Proportional to 688,009.20, 1,032,013.80 and 520,047.60

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Solution

The fourth proportional to 688,009.20, 1,032,013.80 and 520,047.60 is: 780,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,009.20 : 1,032,013.80 = 520,047.60 : x
  2. Step 2: Convert to fraction form
    688,009.20/1,032,013.80 = 520,047.60/x
  3. Step 3: Cross multiply
    688,009.20x = 1,032,013.80 × 520,047.60
  4. Step 4: Simplify right side
    688,009.20x = 536,696,299,856.88
  5. Step 5: Solve for x
    x = 536,696,299,856.88/688,009.20
  6. Step 6: Final answer
    x = 780,071.40

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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.