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Finding the Fourth Proportional to 565,570.80, 780,502.74 and 307,465.20

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Solution

The fourth proportional to 565,570.80, 780,502.74 and 307,465.20 is: 424,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,570.80 : 780,502.74 = 307,465.20 : x
  2. Step 2: Convert to fraction form
    565,570.80/780,502.74 = 307,465.20/x
  3. Step 3: Cross multiply
    565,570.80x = 780,502.74 × 307,465.20
  4. Step 4: Simplify right side
    565,570.80x = 239,977,431,054.65
  5. Step 5: Solve for x
    x = 239,977,431,054.65/565,570.80
  6. Step 6: Final answer
    x = 424,310.15

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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.