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Finding the Fourth Proportional to 688,401.48, 949,728.52 and 507,543.36

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Solution

The fourth proportional to 688,401.48, 949,728.52 and 507,543.36 is: 700,214.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,401.48 : 949,728.52 = 507,543.36 : x
  2. Step 2: Convert to fraction form
    688,401.48/949,728.52 = 507,543.36/x
  3. Step 3: Cross multiply
    688,401.48x = 949,728.52 × 507,543.36
  4. Step 4: Simplify right side
    688,401.48x = 482,028,404,128.63
  5. Step 5: Solve for x
    x = 482,028,404,128.63/688,401.48
  6. Step 6: Final answer
    x = 700,214.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.