Home / 630,890.54-870,628.11-404,535.50

Finding the Fourth Proportional to 630,890.54, 870,628.11 and 404,535.50

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Solution

The fourth proportional to 630,890.54, 870,628.11 and 404,535.50 is: 558,258.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,890.54 : 870,628.11 = 404,535.50 : x
  2. Step 2: Convert to fraction form
    630,890.54/870,628.11 = 404,535.50/x
  3. Step 3: Cross multiply
    630,890.54x = 870,628.11 × 404,535.50
  4. Step 4: Simplify right side
    630,890.54x = 352,199,977,792.91
  5. Step 5: Solve for x
    x = 352,199,977,792.91/630,890.54
  6. Step 6: Final answer
    x = 558,258.45

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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.