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Finding the Fourth Proportional to 623,722.40, 934,508.40 and 290,615.20

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Solution

The fourth proportional to 623,722.40, 934,508.40 and 290,615.20 is: 435,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,722.40 : 934,508.40 = 290,615.20 : x
  2. Step 2: Convert to fraction form
    623,722.40/934,508.40 = 290,615.20/x
  3. Step 3: Cross multiply
    623,722.40x = 934,508.40 × 290,615.20
  4. Step 4: Simplify right side
    623,722.40x = 271,582,345,567.68
  5. Step 5: Solve for x
    x = 271,582,345,567.68/623,722.40
  6. Step 6: Final answer
    x = 435,421.82

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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.