Home / 708,646.79-977,919.40-386,359.67

Finding the Fourth Proportional to 708,646.79, 977,919.40 and 386,359.67

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Solution

The fourth proportional to 708,646.79, 977,919.40 and 386,359.67 is: 533,169.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,646.79 : 977,919.40 = 386,359.67 : x
  2. Step 2: Convert to fraction form
    708,646.79/977,919.40 = 386,359.67/x
  3. Step 3: Cross multiply
    708,646.79x = 977,919.40 × 386,359.67
  4. Step 4: Simplify right side
    708,646.79x = 377,828,616,670.60
  5. Step 5: Solve for x
    x = 377,828,616,670.60/708,646.79
  6. Step 6: Final answer
    x = 533,169.16

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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.