Home / 570,159,005.52-786,819,427.79-309,398,621.52

Finding the Fourth Proportional to 570,159,005.52, 786,819,427.79 and 309,398,621.52

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Solution

The fourth proportional to 570,159,005.52, 786,819,427.79 and 309,398,621.52 is: 426,970,097.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,159,005.52 : 786,819,427.79 = 309,398,621.52 : x
  2. Step 2: Convert to fraction form
    570,159,005.52/786,819,427.79 = 309,398,621.52/x
  3. Step 3: Cross multiply
    570,159,005.52x = 786,819,427.79 × 309,398,621.52
  4. Step 4: Simplify right side
    570,159,005.52x = 243,440,846,341,834,176
  5. Step 5: Solve for x
    x = 243,440,846,341,834,176/570,159,005.52
  6. Step 6: Final answer
    x = 426,970,097.79

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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.