Home / 328,136,927.80-492,168,066.90-85,824,326.20

Finding the Fourth Proportional to 328,136,927.80, 492,168,066.90 and 85,824,326.20

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Solution

The fourth proportional to 328,136,927.80, 492,168,066.90 and 85,824,326.20 is: 128,726,726.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,136,927.80 : 492,168,066.90 = 85,824,326.20 : x
  2. Step 2: Convert to fraction form
    328,136,927.80/492,168,066.90 = 85,824,326.20/x
  3. Step 3: Cross multiply
    328,136,927.80x = 492,168,066.90 × 85,824,326.20
  4. Step 4: Simplify right side
    328,136,927.80x = 42,239,992,718,849,024
  5. Step 5: Solve for x
    x = 42,239,992,718,849,024/328,136,927.80
  6. Step 6: Final answer
    x = 128,726,726.99

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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.