Home / 1,355,535.72-2,031,981.54-645,373.08

Finding the Fourth Proportional to 1,355,535.72, 2,031,981.54 and 645,373.08

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Solution

The fourth proportional to 1,355,535.72, 2,031,981.54 and 645,373.08 is: 967,430.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,535.72 : 2,031,981.54 = 645,373.08 : x
  2. Step 2: Convert to fraction form
    1,355,535.72/2,031,981.54 = 645,373.08/x
  3. Step 3: Cross multiply
    1,355,535.72x = 2,031,981.54 × 645,373.08
  4. Step 4: Simplify right side
    1,355,535.72x = 1,311,386,184,972.94
  5. Step 5: Solve for x
    x = 1,311,386,184,972.94/1,355,535.72
  6. Step 6: Final answer
    x = 967,430.19

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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.