Home / 900,328.10-1,242,618.99-578,440.58

Finding the Fourth Proportional to 900,328.10, 1,242,618.99 and 578,440.58

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Solution

The fourth proportional to 900,328.10, 1,242,618.99 and 578,440.58 is: 798,354.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,328.10 : 1,242,618.99 = 578,440.58 : x
  2. Step 2: Convert to fraction form
    900,328.10/1,242,618.99 = 578,440.58/x
  3. Step 3: Cross multiply
    900,328.10x = 1,242,618.99 × 578,440.58
  4. Step 4: Simplify right side
    900,328.10x = 718,781,249,294.61
  5. Step 5: Solve for x
    x = 718,781,249,294.61/900,328.10
  6. Step 6: Final answer
    x = 798,354.79

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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.