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Finding the Fourth Proportional to 563,681.57, 777,878.76 and 305,559.53

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Solution

The fourth proportional to 563,681.57, 777,878.76 and 305,559.53 is: 421,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,681.57 : 777,878.76 = 305,559.53 : x
  2. Step 2: Convert to fraction form
    563,681.57/777,878.76 = 305,559.53/x
  3. Step 3: Cross multiply
    563,681.57x = 777,878.76 × 305,559.53
  4. Step 4: Simplify right side
    563,681.57x = 237,688,262,885.39
  5. Step 5: Solve for x
    x = 237,688,262,885.39/563,681.57
  6. Step 6: Final answer
    x = 421,671.16

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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.