Home / 778,209.40-1,073,746.26-472,278.64

Finding the Fourth Proportional to 778,209.40, 1,073,746.26 and 472,278.64

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Solution

The fourth proportional to 778,209.40, 1,073,746.26 and 472,278.64 is: 651,633.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,209.40 : 1,073,746.26 = 472,278.64 : x
  2. Step 2: Convert to fraction form
    778,209.40/1,073,746.26 = 472,278.64/x
  3. Step 3: Cross multiply
    778,209.40x = 1,073,746.26 × 472,278.64
  4. Step 4: Simplify right side
    778,209.40x = 507,107,423,377.89
  5. Step 5: Solve for x
    x = 507,107,423,377.89/778,209.40
  6. Step 6: Final answer
    x = 651,633.64

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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.