Home / 1,111,109.24-1,666,762.32-312,397.76

Finding the Fourth Proportional to 1,111,109.24, 1,666,762.32 and 312,397.76

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Solution

The fourth proportional to 1,111,109.24, 1,666,762.32 and 312,397.76 is: 468,624.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,109.24 : 1,666,762.32 = 312,397.76 : x
  2. Step 2: Convert to fraction form
    1,111,109.24/1,666,762.32 = 312,397.76/x
  3. Step 3: Cross multiply
    1,111,109.24x = 1,666,762.32 × 312,397.76
  4. Step 4: Simplify right side
    1,111,109.24x = 520,692,815,220.40
  5. Step 5: Solve for x
    x = 520,692,815,220.40/1,111,109.24
  6. Step 6: Final answer
    x = 468,624.32

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1.5x scale

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.