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Finding the Fourth Proportional to 570,557.44, 787,378.93 and 312,430.24

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Solution

The fourth proportional to 570,557.44, 787,378.93 and 312,430.24 is: 431,159.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,557.44 : 787,378.93 = 312,430.24 : x
  2. Step 2: Convert to fraction form
    570,557.44/787,378.93 = 312,430.24/x
  3. Step 3: Cross multiply
    570,557.44x = 787,378.93 × 312,430.24
  4. Step 4: Simplify right side
    570,557.44x = 246,000,984,133.95
  5. Step 5: Solve for x
    x = 246,000,984,133.95/570,557.44
  6. Step 6: Final answer
    x = 431,159.02

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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.