Home / 1,316,642,985.95-1,816,984,900.08-721,925,963.28

Finding the Fourth Proportional to 1,316,642,985.95, 1,816,984,900.08 and 721,925,963.28

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Solution

The fourth proportional to 1,316,642,985.95, 1,816,984,900.08 and 721,925,963.28 is: 996,267,468.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,642,985.95 : 1,816,984,900.08 = 721,925,963.28 : x
  2. Step 2: Convert to fraction form
    1,316,642,985.95/1,816,984,900.08 = 721,925,963.28/x
  3. Step 3: Cross multiply
    1,316,642,985.95x = 1,816,984,900.08 × 721,925,963.28
  4. Step 4: Simplify right side
    1,316,642,985.95x = 1,311,728,574,255,468,544
  5. Step 5: Solve for x
    x = 1,311,728,574,255,468,544/1,316,642,985.95
  6. Step 6: Final answer
    x = 996,267,468.29

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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.