Home / 830,045.14-1,145,129.64-507,194.72

Finding the Fourth Proportional to 830,045.14, 1,145,129.64 and 507,194.72

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Solution

The fourth proportional to 830,045.14, 1,145,129.64 and 507,194.72 is: 699,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,045.14 : 1,145,129.64 = 507,194.72 : x
  2. Step 2: Convert to fraction form
    830,045.14/1,145,129.64 = 507,194.72/x
  3. Step 3: Cross multiply
    830,045.14x = 1,145,129.64 × 507,194.72
  4. Step 4: Simplify right side
    830,045.14x = 580,803,707,123.50
  5. Step 5: Solve for x
    x = 580,803,707,123.50/830,045.14
  6. Step 6: Final answer
    x = 699,725.45

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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.