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Finding the Fourth Proportional to 565,703.66, 780,665.56 and 307,580.60

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Solution

The fourth proportional to 565,703.66, 780,665.56 and 307,580.60 is: 424,458.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,703.66 : 780,665.56 = 307,580.60 : x
  2. Step 2: Convert to fraction form
    565,703.66/780,665.56 = 307,580.60/x
  3. Step 3: Cross multiply
    565,703.66x = 780,665.56 × 307,580.60
  4. Step 4: Simplify right side
    565,703.66x = 240,117,585,720.74
  5. Step 5: Solve for x
    x = 240,117,585,720.74/565,703.66
  6. Step 6: Final answer
    x = 424,458.25

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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.