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Finding the Fourth Proportional to 425,779.51, 637,946.28 and 256,945.08

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Solution

The fourth proportional to 425,779.51, 637,946.28 and 256,945.08 is: 384,981.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,779.51 : 637,946.28 = 256,945.08 : x
  2. Step 2: Convert to fraction form
    425,779.51/637,946.28 = 256,945.08/x
  3. Step 3: Cross multiply
    425,779.51x = 637,946.28 × 256,945.08
  4. Step 4: Simplify right side
    425,779.51x = 163,917,157,950.30
  5. Step 5: Solve for x
    x = 163,917,157,950.30/425,779.51
  6. Step 6: Final answer
    x = 384,981.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.