Home / 830,430.80-1,145,994.48-448,457.54

Finding the Fourth Proportional to 830,430.80, 1,145,994.48 and 448,457.54

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Solution

The fourth proportional to 830,430.80, 1,145,994.48 and 448,457.54 is: 618,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,430.80 : 1,145,994.48 = 448,457.54 : x
  2. Step 2: Convert to fraction form
    830,430.80/1,145,994.48 = 448,457.54/x
  3. Step 3: Cross multiply
    830,430.80x = 1,145,994.48 × 448,457.54
  4. Step 4: Simplify right side
    830,430.80x = 513,929,859,624.41
  5. Step 5: Solve for x
    x = 513,929,859,624.41/830,430.80
  6. Step 6: Final answer
    x = 618,871.39

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Double scale
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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.