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Finding the Fourth Proportional to 570,475.76, 787,226.59 and 312,303.20

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Solution

The fourth proportional to 570,475.76, 787,226.59 and 312,303.20 is: 430,962.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,475.76 : 787,226.59 = 312,303.20 : x
  2. Step 2: Convert to fraction form
    570,475.76/787,226.59 = 312,303.20/x
  3. Step 3: Cross multiply
    570,475.76x = 787,226.59 × 312,303.20
  4. Step 4: Simplify right side
    570,475.76x = 245,853,383,182.09
  5. Step 5: Solve for x
    x = 245,853,383,182.09/570,475.76
  6. Step 6: Final answer
    x = 430,962.02

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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.