Home / 1,119,312,920.40-1,679,184,581.40-429,166,352.40

Finding the Fourth Proportional to 1,119,312,920.40, 1,679,184,581.40 and 429,166,352.40

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Solution

The fourth proportional to 1,119,312,920.40, 1,679,184,581.40 and 429,166,352.40 is: 643,832,040.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,312,920.40 : 1,679,184,581.40 = 429,166,352.40 : x
  2. Step 2: Convert to fraction form
    1,119,312,920.40/1,679,184,581.40 = 429,166,352.40/x
  3. Step 3: Cross multiply
    1,119,312,920.40x = 1,679,184,581.40 × 429,166,352.40
  4. Step 4: Simplify right side
    1,119,312,920.40x = 720,649,521,805,758,848
  5. Step 5: Solve for x
    x = 720,649,521,805,758,848/1,119,312,920.40
  6. Step 6: Final answer
    x = 643,832,040.77

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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.