Finding the Fourth Proportional to 687,211,681.24, 1,031,134,545.45 and 313,834,028.93
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Solution
The fourth proportional to 687,211,681.24, 1,031,134,545.45 and 313,834,028.93 is: 470,895,820.90
Step by Step Solution
- Step 1: Write the proportion equation
687,211,681.24 : 1,031,134,545.45 = 313,834,028.93 : x - Step 2: Convert to fraction form
687,211,681.24/1,031,134,545.45 = 313,834,028.93/x - Step 3: Cross multiply
687,211,681.24x = 1,031,134,545.45 × 313,834,028.93 - Step 4: Simplify right side
687,211,681.24x = 323,605,108,770,651,840 - Step 5: Solve for x
x = 323,605,108,770,651,840/687,211,681.24 - Step 6: Final answer
x = 470,895,820.90
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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.