Home / 507,831.60-761,941.80-499,861.20

Finding the Fourth Proportional to 507,831.60, 761,941.80 and 499,861.20

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Solution

The fourth proportional to 507,831.60, 761,941.80 and 499,861.20 is: 749,983.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,831.60 : 761,941.80 = 499,861.20 : x
  2. Step 2: Convert to fraction form
    507,831.60/761,941.80 = 499,861.20/x
  3. Step 3: Cross multiply
    507,831.60x = 761,941.80 × 499,861.20
  4. Step 4: Simplify right side
    507,831.60x = 380,865,142,478.16
  5. Step 5: Solve for x
    x = 380,865,142,478.16/507,831.60
  6. Step 6: Final answer
    x = 749,983.15

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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.