Home / 875,007.40-1,312,802.70-426,008.20

Finding the Fourth Proportional to 875,007.40, 1,312,802.70 and 426,008.20

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Solution

The fourth proportional to 875,007.40, 1,312,802.70 and 426,008.20 is: 639,154.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,007.40 : 1,312,802.70 = 426,008.20 : x
  2. Step 2: Convert to fraction form
    875,007.40/1,312,802.70 = 426,008.20/x
  3. Step 3: Cross multiply
    875,007.40x = 1,312,802.70 × 426,008.20
  4. Step 4: Simplify right side
    875,007.40x = 559,264,715,182.14
  5. Step 5: Solve for x
    x = 559,264,715,182.14/875,007.40
  6. Step 6: Final answer
    x = 639,154.27

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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.