Home / 719,296,612.70-992,629,313.38-389,271,751.70

Finding the Fourth Proportional to 719,296,612.70, 992,629,313.38 and 389,271,751.70

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Solution

The fourth proportional to 719,296,612.70, 992,629,313.38 and 389,271,751.70 is: 537,195,010.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,296,612.70 : 992,629,313.38 = 389,271,751.70 : x
  2. Step 2: Convert to fraction form
    719,296,612.70/992,629,313.38 = 389,271,751.70/x
  3. Step 3: Cross multiply
    719,296,612.70x = 992,629,313.38 × 389,271,751.70
  4. Step 4: Simplify right side
    719,296,612.70x = 386,402,551,603,724,288
  5. Step 5: Solve for x
    x = 386,402,551,603,724,288/719,296,612.70
  6. Step 6: Final answer
    x = 537,195,010.77

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Double scale
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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.