Home / 788,920.40-1,184,158.20-390,011.60

Finding the Fourth Proportional to 788,920.40, 1,184,158.20 and 390,011.60

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Solution

The fourth proportional to 788,920.40, 1,184,158.20 and 390,011.60 is: 585,401.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,920.40 : 1,184,158.20 = 390,011.60 : x
  2. Step 2: Convert to fraction form
    788,920.40/1,184,158.20 = 390,011.60/x
  3. Step 3: Cross multiply
    788,920.40x = 1,184,158.20 × 390,011.60
  4. Step 4: Simplify right side
    788,920.40x = 461,835,434,235.12
  5. Step 5: Solve for x
    x = 461,835,434,235.12/788,920.40
  6. Step 6: Final answer
    x = 585,401.82

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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.