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Finding the Fourth Proportional to 708,383.76, 977,569.95 and 402,460.67

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Solution

The fourth proportional to 708,383.76, 977,569.95 and 402,460.67 is: 555,395.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,383.76 : 977,569.95 = 402,460.67 : x
  2. Step 2: Convert to fraction form
    708,383.76/977,569.95 = 402,460.67/x
  3. Step 3: Cross multiply
    708,383.76x = 977,569.95 × 402,460.67
  4. Step 4: Simplify right side
    708,383.76x = 393,433,452,161.02
  5. Step 5: Solve for x
    x = 393,433,452,161.02/708,383.76
  6. Step 6: Final answer
    x = 555,395.92

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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.