Home / 1,087,325.20-1,630,987.80-709,411.60

Finding the Fourth Proportional to 1,087,325.20, 1,630,987.80 and 709,411.60

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Solution

The fourth proportional to 1,087,325.20, 1,630,987.80 and 709,411.60 is: 1,064,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,325.20 : 1,630,987.80 = 709,411.60 : x
  2. Step 2: Convert to fraction form
    1,087,325.20/1,630,987.80 = 709,411.60/x
  3. Step 3: Cross multiply
    1,087,325.20x = 1,630,987.80 × 709,411.60
  4. Step 4: Simplify right side
    1,087,325.20x = 1,157,041,664,778.48
  5. Step 5: Solve for x
    x = 1,157,041,664,778.48/1,087,325.20
  6. Step 6: Final answer
    x = 1,064,117.40

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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.