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Finding the Fourth Proportional to 977,545.90, 1,370,430.50 and 977,545.90

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Solution

The fourth proportional to 977,545.90, 1,370,430.50 and 977,545.90 is: 1,370,430.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,545.90 : 1,370,430.50 = 977,545.90 : x
  2. Step 2: Convert to fraction form
    977,545.90/1,370,430.50 = 977,545.90/x
  3. Step 3: Cross multiply
    977,545.90x = 1,370,430.50 × 977,545.90
  4. Step 4: Simplify right side
    977,545.90x = 1,339,658,716,509.95
  5. Step 5: Solve for x
    x = 1,339,658,716,509.95/977,545.90
  6. Step 6: Final answer
    x = 1,370,430.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.