Home / 406,903,428.28-561,509,645.34-230,703,279.40

Finding the Fourth Proportional to 406,903,428.28, 561,509,645.34 and 230,703,279.40

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Solution

The fourth proportional to 406,903,428.28, 561,509,645.34 and 230,703,279.40 is: 318,360,838.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,903,428.28 : 561,509,645.34 = 230,703,279.40 : x
  2. Step 2: Convert to fraction form
    406,903,428.28/561,509,645.34 = 230,703,279.40/x
  3. Step 3: Cross multiply
    406,903,428.28x = 561,509,645.34 × 230,703,279.40
  4. Step 4: Simplify right side
    406,903,428.28x = 129,542,116,594,668,944
  5. Step 5: Solve for x
    x = 129,542,116,594,668,944/406,903,428.28
  6. Step 6: Final answer
    x = 318,360,838.45

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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.