Home / 1,064,340.74-1,596,721.43-390,428.30

Finding the Fourth Proportional to 1,064,340.74, 1,596,721.43 and 390,428.30

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Solution

The fourth proportional to 1,064,340.74, 1,596,721.43 and 390,428.30 is: 585,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,064,340.74 : 1,596,721.43 = 390,428.30 : x
  2. Step 2: Convert to fraction form
    1,064,340.74/1,596,721.43 = 390,428.30/x
  3. Step 3: Cross multiply
    1,064,340.74x = 1,596,721.43 × 390,428.30
  4. Step 4: Simplify right side
    1,064,340.74x = 623,405,233,488.47
  5. Step 5: Solve for x
    x = 623,405,233,488.47/1,064,340.74
  6. Step 6: Final answer
    x = 585,719.60

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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.