Home / 742,927,715.10-1,114,391,572.65-420,441,443.10

Finding the Fourth Proportional to 742,927,715.10, 1,114,391,572.65 and 420,441,443.10

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Solution

The fourth proportional to 742,927,715.10, 1,114,391,572.65 and 420,441,443.10 is: 630,662,164.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,927,715.10 : 1,114,391,572.65 = 420,441,443.10 : x
  2. Step 2: Convert to fraction form
    742,927,715.10/1,114,391,572.65 = 420,441,443.10/x
  3. Step 3: Cross multiply
    742,927,715.10x = 1,114,391,572.65 × 420,441,443.10
  4. Step 4: Simplify right side
    742,927,715.10x = 468,536,400,983,444,544
  5. Step 5: Solve for x
    x = 468,536,400,983,444,544/742,927,715.10
  6. Step 6: Final answer
    x = 630,662,164.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.