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Finding the Fourth Proportional to 553,274.13, 763,510.77 and 311,559.60

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Solution

The fourth proportional to 553,274.13, 763,510.77 and 311,559.60 is: 429,948.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,274.13 : 763,510.77 = 311,559.60 : x
  2. Step 2: Convert to fraction form
    553,274.13/763,510.77 = 311,559.60/x
  3. Step 3: Cross multiply
    553,274.13x = 763,510.77 × 311,559.60
  4. Step 4: Simplify right side
    553,274.13x = 237,879,110,096.89
  5. Step 5: Solve for x
    x = 237,879,110,096.89/553,274.13
  6. Step 6: Final answer
    x = 429,948.01

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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.