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Finding the Fourth Proportional to 761,220, 1,050,483.57 and 417,068.97

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Solution

The fourth proportional to 761,220, 1,050,483.57 and 417,068.97 is: 575,555.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,220 : 1,050,483.57 = 417,068.97 : x
  2. Step 2: Convert to fraction form
    761,220/1,050,483.57 = 417,068.97/x
  3. Step 3: Cross multiply
    761,220x = 1,050,483.57 × 417,068.97
  4. Step 4: Simplify right side
    761,220x = 438,124,096,872.94
  5. Step 5: Solve for x
    x = 438,124,096,872.94/761,220
  6. Step 6: Final answer
    x = 575,555.16

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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.