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Finding the Fourth Proportional to 560,791,920.25, 773,890,947.25 and 309,889,307.53

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Solution

The fourth proportional to 560,791,920.25, 773,890,947.25 and 309,889,307.53 is: 427,646,192.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,791,920.25 : 773,890,947.25 = 309,889,307.53 : x
  2. Step 2: Convert to fraction form
    560,791,920.25/773,890,947.25 = 309,889,307.53/x
  3. Step 3: Cross multiply
    560,791,920.25x = 773,890,947.25 × 309,889,307.53
  4. Step 4: Simplify right side
    560,791,920.25x = 239,820,529,747,038,240
  5. Step 5: Solve for x
    x = 239,820,529,747,038,240/560,791,920.25
  6. Step 6: Final answer
    x = 427,646,192.98

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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.