Home / 921,803.76-1,272,094.47-513,931.50

Finding the Fourth Proportional to 921,803.76, 1,272,094.47 and 513,931.50

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Solution

The fourth proportional to 921,803.76, 1,272,094.47 and 513,931.50 is: 709,228.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,803.76 : 1,272,094.47 = 513,931.50 : x
  2. Step 2: Convert to fraction form
    921,803.76/1,272,094.47 = 513,931.50/x
  3. Step 3: Cross multiply
    921,803.76x = 1,272,094.47 × 513,931.50
  4. Step 4: Simplify right side
    921,803.76x = 653,769,419,108.81
  5. Step 5: Solve for x
    x = 653,769,419,108.81/921,803.76
  6. Step 6: Final answer
    x = 709,228.41

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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.