Home / 989,774,876.53-1,365,903,318.88-543,779,458.05

Finding the Fourth Proportional to 989,774,876.53, 1,365,903,318.88 and 543,779,458.05

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Solution

The fourth proportional to 989,774,876.53, 1,365,903,318.88 and 543,779,458.05 is: 750,423,337.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,774,876.53 : 1,365,903,318.88 = 543,779,458.05 : x
  2. Step 2: Convert to fraction form
    989,774,876.53/1,365,903,318.88 = 543,779,458.05/x
  3. Step 3: Cross multiply
    989,774,876.53x = 1,365,903,318.88 × 543,779,458.05
  4. Step 4: Simplify right side
    989,774,876.53x = 742,750,166,489,262,720
  5. Step 5: Solve for x
    x = 742,750,166,489,262,720/989,774,876.53
  6. Step 6: Final answer
    x = 750,423,337.77

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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.