Home / 989,774,876.28-1,365,903,318.53-543,779,457.81

Finding the Fourth Proportional to 989,774,876.28, 1,365,903,318.53 and 543,779,457.81

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Solution

The fourth proportional to 989,774,876.28, 1,365,903,318.53 and 543,779,457.81 is: 750,423,337.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,774,876.28 : 1,365,903,318.53 = 543,779,457.81 : x
  2. Step 2: Convert to fraction form
    989,774,876.28/1,365,903,318.53 = 543,779,457.81/x
  3. Step 3: Cross multiply
    989,774,876.28x = 1,365,903,318.53 × 543,779,457.81
  4. Step 4: Simplify right side
    989,774,876.28x = 742,750,165,968,404,224
  5. Step 5: Solve for x
    x = 742,750,165,968,404,224/989,774,876.28
  6. Step 6: Final answer
    x = 750,423,337.44

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1.5x scale

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.