Home / 918,075.26-1,377,111.83-319,036.47

Finding the Fourth Proportional to 918,075.26, 1,377,111.83 and 319,036.47

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Solution

The fourth proportional to 918,075.26, 1,377,111.83 and 319,036.47 is: 478,554.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,075.26 : 1,377,111.83 = 319,036.47 : x
  2. Step 2: Convert to fraction form
    918,075.26/1,377,111.83 = 319,036.47/x
  3. Step 3: Cross multiply
    918,075.26x = 1,377,111.83 × 319,036.47
  4. Step 4: Simplify right side
    918,075.26x = 439,348,899,819.92
  5. Step 5: Solve for x
    x = 439,348,899,819.92/918,075.26
  6. Step 6: Final answer
    x = 478,554.34

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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.