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Finding the Fourth Proportional to 565,386.24, 780,203.52 and 310,771.20

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Solution

The fourth proportional to 565,386.24, 780,203.52 and 310,771.20 is: 428,848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,386.24 : 780,203.52 = 310,771.20 : x
  2. Step 2: Convert to fraction form
    565,386.24/780,203.52 = 310,771.20/x
  3. Step 3: Cross multiply
    565,386.24x = 780,203.52 × 310,771.20
  4. Step 4: Simplify right side
    565,386.24x = 242,464,784,154.62
  5. Step 5: Solve for x
    x = 242,464,784,154.62/565,386.24
  6. Step 6: Final answer
    x = 428,848.05

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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.