Home / 778,488.14-1,074,289.16-456,412.70

Finding the Fourth Proportional to 778,488.14, 1,074,289.16 and 456,412.70

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Solution

The fourth proportional to 778,488.14, 1,074,289.16 and 456,412.70 is: 629,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,488.14 : 1,074,289.16 = 456,412.70 : x
  2. Step 2: Convert to fraction form
    778,488.14/1,074,289.16 = 456,412.70/x
  3. Step 3: Cross multiply
    778,488.14x = 1,074,289.16 × 456,412.70
  4. Step 4: Simplify right side
    778,488.14x = 490,319,216,096.33
  5. Step 5: Solve for x
    x = 490,319,216,096.33/778,488.14
  6. Step 6: Final answer
    x = 629,835.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.