Home / 1,432,520.70-2,148,547.55-421,406.25

Finding the Fourth Proportional to 1,432,520.70, 2,148,547.55 and 421,406.25

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Solution

The fourth proportional to 1,432,520.70, 2,148,547.55 and 421,406.25 is: 632,040.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,520.70 : 2,148,547.55 = 421,406.25 : x
  2. Step 2: Convert to fraction form
    1,432,520.70/2,148,547.55 = 421,406.25/x
  3. Step 3: Cross multiply
    1,432,520.70x = 2,148,547.55 × 421,406.25
  4. Step 4: Simplify right side
    1,432,520.70x = 905,411,365,992.19
  5. Step 5: Solve for x
    x = 905,411,365,992.19/1,432,520.70
  6. Step 6: Final answer
    x = 632,040.69

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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.