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Finding the Fourth Proportional to 630,798.36, 870,471.32 and 358,840.67

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Solution

The fourth proportional to 630,798.36, 870,471.32 and 358,840.67 is: 495,182.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,798.36 : 870,471.32 = 358,840.67 : x
  2. Step 2: Convert to fraction form
    630,798.36/870,471.32 = 358,840.67/x
  3. Step 3: Cross multiply
    630,798.36x = 870,471.32 × 358,840.67
  4. Step 4: Simplify right side
    630,798.36x = 312,360,505,538.02
  5. Step 5: Solve for x
    x = 312,360,505,538.02/630,798.36
  6. Step 6: Final answer
    x = 495,182.81

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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.