Home / 285,950,266.70-428,925,400.05-78,688,276.70

Finding the Fourth Proportional to 285,950,266.70, 428,925,400.05 and 78,688,276.70

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Solution

The fourth proportional to 285,950,266.70, 428,925,400.05 and 78,688,276.70 is: 118,032,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,950,266.70 : 428,925,400.05 = 78,688,276.70 : x
  2. Step 2: Convert to fraction form
    285,950,266.70/428,925,400.05 = 78,688,276.70/x
  3. Step 3: Cross multiply
    285,950,266.70x = 428,925,400.05 × 78,688,276.70
  4. Step 4: Simplify right side
    285,950,266.70x = 33,751,400,562,792,596
  5. Step 5: Solve for x
    x = 33,751,400,562,792,596/285,950,266.70
  6. Step 6: Final answer
    x = 118,032,415.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.