Home / 719,618,688.43-992,982,500.21-422,152,394.22

Finding the Fourth Proportional to 719,618,688.43, 992,982,500.21 and 422,152,394.22

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Solution

The fourth proportional to 719,618,688.43, 992,982,500.21 and 422,152,394.22 is: 582,516,750.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,618,688.43 : 992,982,500.21 = 422,152,394.22 : x
  2. Step 2: Convert to fraction form
    719,618,688.43/992,982,500.21 = 422,152,394.22/x
  3. Step 3: Cross multiply
    719,618,688.43x = 992,982,500.21 × 422,152,394.22
  4. Step 4: Simplify right side
    719,618,688.43x = 419,189,939,879,088,064
  5. Step 5: Solve for x
    x = 419,189,939,879,088,064/719,618,688.43
  6. Step 6: Final answer
    x = 582,516,750.36

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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.