Home / 385,923,386.42-532,573,868.10-209,710,962.59

Finding the Fourth Proportional to 385,923,386.42, 532,573,868.10 and 209,710,962.59

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Solution

The fourth proportional to 385,923,386.42, 532,573,868.10 and 209,710,962.59 is: 289,400,908.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,923,386.42 : 532,573,868.10 = 209,710,962.59 : x
  2. Step 2: Convert to fraction form
    385,923,386.42/532,573,868.10 = 209,710,962.59/x
  3. Step 3: Cross multiply
    385,923,386.42x = 532,573,868.10 × 209,710,962.59
  4. Step 4: Simplify right side
    385,923,386.42x = 111,686,578,529,530,704
  5. Step 5: Solve for x
    x = 111,686,578,529,530,704/385,923,386.42
  6. Step 6: Final answer
    x = 289,400,908.21

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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.