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Finding the Fourth Proportional to 553,811,309.76, 764,494,930.72 and 345,070,587

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Solution

The fourth proportional to 553,811,309.76, 764,494,930.72 and 345,070,587 is: 476,344,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,811,309.76 : 764,494,930.72 = 345,070,587 : x
  2. Step 2: Convert to fraction form
    553,811,309.76/764,494,930.72 = 345,070,587/x
  3. Step 3: Cross multiply
    553,811,309.76x = 764,494,930.72 × 345,070,587
  4. Step 4: Simplify right side
    553,811,309.76x = 263,804,714,502,074,752
  5. Step 5: Solve for x
    x = 263,804,714,502,074,752/553,811,309.76
  6. Step 6: Final answer
    x = 476,344,036.05

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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.