Home / 759,953.34-1,048,688.37-420,421.59

Finding the Fourth Proportional to 759,953.34, 1,048,688.37 and 420,421.59

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Solution

The fourth proportional to 759,953.34, 1,048,688.37 and 420,421.59 is: 580,155.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,953.34 : 1,048,688.37 = 420,421.59 : x
  2. Step 2: Convert to fraction form
    759,953.34/1,048,688.37 = 420,421.59/x
  3. Step 3: Cross multiply
    759,953.34x = 1,048,688.37 × 420,421.59
  4. Step 4: Simplify right side
    759,953.34x = 440,891,231,929.91
  5. Step 5: Solve for x
    x = 440,891,231,929.91/759,953.34
  6. Step 6: Final answer
    x = 580,155.66

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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.