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Finding the Fourth Proportional to 612,477.95, 845,095.28 and 357,779.93

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Solution

The fourth proportional to 612,477.95, 845,095.28 and 357,779.93 is: 493,663.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,477.95 : 845,095.28 = 357,779.93 : x
  2. Step 2: Convert to fraction form
    612,477.95/845,095.28 = 357,779.93/x
  3. Step 3: Cross multiply
    612,477.95x = 845,095.28 × 357,779.93
  4. Step 4: Simplify right side
    612,477.95x = 302,358,124,107.35
  5. Step 5: Solve for x
    x = 302,358,124,107.35/612,477.95
  6. Step 6: Final answer
    x = 493,663.69

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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.