Home / 830,308.84-1,145,838.90-490,808.68

Finding the Fourth Proportional to 830,308.84, 1,145,838.90 and 490,808.68

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Solution

The fourth proportional to 830,308.84, 1,145,838.90 and 490,808.68 is: 677,323.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,308.84 : 1,145,838.90 = 490,808.68 : x
  2. Step 2: Convert to fraction form
    830,308.84/1,145,838.90 = 490,808.68/x
  3. Step 3: Cross multiply
    830,308.84x = 1,145,838.90 × 490,808.68
  4. Step 4: Simplify right side
    830,308.84x = 562,387,678,001.65
  5. Step 5: Solve for x
    x = 562,387,678,001.65/830,308.84
  6. Step 6: Final answer
    x = 677,323.49

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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.