Home / 1,021,000.70-1,531,501.05-972,011.90

Finding the Fourth Proportional to 1,021,000.70, 1,531,501.05 and 972,011.90

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Solution

The fourth proportional to 1,021,000.70, 1,531,501.05 and 972,011.90 is: 1,458,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,000.70 : 1,531,501.05 = 972,011.90 : x
  2. Step 2: Convert to fraction form
    1,021,000.70/1,531,501.05 = 972,011.90/x
  3. Step 3: Cross multiply
    1,021,000.70x = 1,531,501.05 × 972,011.90
  4. Step 4: Simplify right side
    1,021,000.70x = 1,488,637,245,462.50
  5. Step 5: Solve for x
    x = 1,488,637,245,462.50/1,021,000.70
  6. Step 6: Final answer
    x = 1,458,017.85

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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.