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Finding the Fourth Proportional to 563,307.60, 777,374.34 and 308,643.60

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Solution

The fourth proportional to 563,307.60, 777,374.34 and 308,643.60 is: 425,933.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,307.60 : 777,374.34 = 308,643.60 : x
  2. Step 2: Convert to fraction form
    563,307.60/777,374.34 = 308,643.60/x
  3. Step 3: Cross multiply
    563,307.60x = 777,374.34 × 308,643.60
  4. Step 4: Simplify right side
    563,307.60x = 239,931,614,845.22
  5. Step 5: Solve for x
    x = 239,931,614,845.22/563,307.60
  6. Step 6: Final answer
    x = 425,933.57

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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.