Home / 1,075,689.40-1,613,534.10-287,721.40

Finding the Fourth Proportional to 1,075,689.40, 1,613,534.10 and 287,721.40

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Solution

The fourth proportional to 1,075,689.40, 1,613,534.10 and 287,721.40 is: 431,582.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,075,689.40 : 1,613,534.10 = 287,721.40 : x
  2. Step 2: Convert to fraction form
    1,075,689.40/1,613,534.10 = 287,721.40/x
  3. Step 3: Cross multiply
    1,075,689.40x = 1,613,534.10 × 287,721.40
  4. Step 4: Simplify right side
    1,075,689.40x = 464,248,290,199.74
  5. Step 5: Solve for x
    x = 464,248,290,199.74/1,075,689.40
  6. Step 6: Final answer
    x = 431,582.10

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Double scale
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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.