Home / 685,105,948.98-945,447,094.89-371,840,127.30

Finding the Fourth Proportional to 685,105,948.98, 945,447,094.89 and 371,840,127.30

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Solution

The fourth proportional to 685,105,948.98, 945,447,094.89 and 371,840,127.30 is: 513,139,856.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,105,948.98 : 945,447,094.89 = 371,840,127.30 : x
  2. Step 2: Convert to fraction form
    685,105,948.98/945,447,094.89 = 371,840,127.30/x
  3. Step 3: Cross multiply
    685,105,948.98x = 945,447,094.89 × 371,840,127.30
  4. Step 4: Simplify right side
    685,105,948.98x = 351,555,168,119,312,768
  5. Step 5: Solve for x
    x = 351,555,168,119,312,768/685,105,948.98
  6. Step 6: Final answer
    x = 513,139,856.17

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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.