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Finding the Fourth Proportional to 565,559.16, 780,486.54 and 310,916.76

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Solution

The fourth proportional to 565,559.16, 780,486.54 and 310,916.76 is: 429,073.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,559.16 : 780,486.54 = 310,916.76 : x
  2. Step 2: Convert to fraction form
    565,559.16/780,486.54 = 310,916.76/x
  3. Step 3: Cross multiply
    565,559.16x = 780,486.54 × 310,916.76
  4. Step 4: Simplify right side
    565,559.16x = 242,666,346,240.41
  5. Step 5: Solve for x
    x = 242,666,346,240.41/565,559.16
  6. Step 6: Final answer
    x = 429,073.32

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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.