Home / 646,470.07-969,039.76-286,810.31

Finding the Fourth Proportional to 646,470.07, 969,039.76 and 286,810.31

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Solution

The fourth proportional to 646,470.07, 969,039.76 and 286,810.31 is: 429,920.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,470.07 : 969,039.76 = 286,810.31 : x
  2. Step 2: Convert to fraction form
    646,470.07/969,039.76 = 286,810.31/x
  3. Step 3: Cross multiply
    646,470.07x = 969,039.76 × 286,810.31
  4. Step 4: Simplify right side
    646,470.07x = 277,930,588,994.38
  5. Step 5: Solve for x
    x = 277,930,588,994.38/646,470.07
  6. Step 6: Final answer
    x = 429,920.27

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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.